#coding:utf-8
class Triangle(object):
    def __init__(self,a,b,c):
        self.a=a
        self.b=b
        self.c=c
    def getArea(self):
        a,b,c=self.a,self.b,self.c
        p=(a+b+c)/2
        area=(p*(p-a)*(p-b)*(p-c)) ** 0.5
        return area


